Tabbing machine



Sept. 2, 1924.. 1,506,829

H. J. Goss TABBING 'MACHINE Filed Aural s, m23 :s simu-sneu, l y

sept. 2 1924.

Fig.

Filad April 3. 1923 H. J. GOSS TABBING MACHINE .'5 Sheets-Sheet 2 g4744] AZZ/4L@ j Sept 2; H924. 1,506,829

H. J. Goss TAB'BING MACHINE Film Anm s. 192sv s shuts-smit 5 Patented Sept. 2, 1924.

UNITED STATES PATENT OFFICE.

HAROLD J. GOSS, O'F NASHU'A, NEW HAMPSHIRE, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE LAKE ERIE TRUST COMPANY, OF CLEVELAND, OHIO, A CORPORATION,OF

OHIO.

TABBING MACHINE.

To all whom it may concern:

Be it known that I, HAROLD J. Goss, a citizen of the United States, and resident of Nashua, in the county of Hillsboro and State of New Hampshire, have invented certain new and useful Improvements in Tabbing Machines, of which the following is a specification.

This invention relates to the production of paper box blanks with reinforcing tabs or patches in certain locations, and has particular reference to machines for producing box members such as described and claimed in Letters Patent No. 1,477,963, granted December 18, 1923, to E. W. Labombarde.

The object of the present invention is to provide an improved machine for simultaneously aflixing, adhesively, a plurality of tabs of suitable material, such as Kraft paper, to those portions of a fiat blank which are to constitute the corners of the bottom or top member of a paper box.

For reasons more fully explained in the Letters Patent referred to, the tabs are so secured to the blank that when the blank is folded to the form of a box member, said tabs or portions thereof are free to shift relatively to the crease lines on which the blank is folded. This not only results in avoiding strain at the crease lines due to the presence of the, tabs which are interfolded with wall portions of the box member, but also provides what may be referred to as caulked corners which prevent sifting out or leakage of the contents of the box, or invasion by insects through such corners. In order that portions of the tabs shall be free to so shift or slide, it is essential that when they are adhesively Secured to the blanks, the area of each adhesively secured portion of a tab shall be less than the area or size of the tab so as to leave 11n-secured portions free to shift when the blank is folded. Therefore a particular object of the present invention is to provide a machine which will effect the attachment of tabs to blanks by means of adhesive areas smaller than the size of the tabs.

Of the accompanying drawings :d

Figure l is a vperspective view of so much of my improved tabbing machine as is necessary to illustrate the invention.

Figure 2 represents a longitudinal section on a line substantially at the mid-Width of the machine.

Figure 3 is a detail sectional elevation similar to a portion of Figure 2, on a larger scale. y

Figure 4 represents a section on line 4-4 of F igure 3, on a larger scale, showing also one of the tape or strip reels.

Figure 5 is a detail perspective view of some of the mechanism which controls the feed of the paper tapes according to the presence or absence of a blank approaching position to be tabbed.

Figure 6 represents a section on line 6`6 of Figure 2, on a larger scale.

Figure 7 is a sectional detail view of the means for preparing each blank to receive the tabs which are to be adhesively secured thereto.

Figure 8 is a perspective of a tabbed blank produced by the machine.

Similar reference charactersy designate similar parts in all of the views:

To facilitate an understanding of the details of the invention, the following brief explanation of the struct-ure and operation of the machine is given.

Previously cut and creased'blanks of such form as indicated by Figure 8, but without the corner tabs a', are fed one by one from the table 13 (Fig. 1) by feed wheels 16, and are pushed along by pins 21 of chains 20 (Fig. 2), and while travelling receive four small areas of glue near their corners by means of revolving arms 36 having pads which first take glue from rolls 27 and transfer it to the proper locations on the blanks. Each blank then moves onto a belt 40 where it is temporarily arrested by stops 58. Vhile the blank is so arrested, four small pieces of tabbing material are simultaneously cut from four strips a which have been fed by mechanisms one of which is best shown in Fig. 4, the strips leading from four reels 70, and the. four pieces cut olf are caused to adhere to the four glued areas of the blank by means of pressure. After this the stops 58 move out of the way and the tabbed blank resumes its travel to the delivery end of the machine. The pressure applying mechanisms act on ortions of the blank beyond the edges of t e belt 40 so that the belt itself which moves con tinuously does not disturb the positicn of the blankl while the tabs are being applied.

The details of the machine will now be described.

At one end of a suitable frame 12 is an adjustably mounted inclined table 13 (Fig. l) for blanks such as indicated at b in Figure 8, to which blanks tabs or patches a a are to be adhesively aliixed by the machine.

Thel blanks are singly and successively fed over a' roll or rolls 14 (Fig. 2) carried by a shaft 15, by means of one or more friction combing feed wheels 16 carried by shaft 17, and pass onto a table plate or strip 1S (Figs. 2 and 6) where each blank may briefly come to rest until advanced by chains 20 having pins 21. The chains are mounted on suitable sprockets carried by the shaft 15 and a forward shaft 19, and are guided by grooved strips 22 supported by tie rods 23.

Secured to and rising from one of the tie rods 23 are two brackets 24 cach supporting a trough 25 (Figs. 1 and 2) for glue or for water according to whether the reinforcing strips are previously gummed or not. At present it is to be supposed that the troughs 25 hold glue, glue being preferable as hereinafter explained.

Mounted in bearings provided by the walls of each tronOh 25 is a shaft 26 carrying a roll or whel 27 which dips into the contents of the trough. Each shaft 26 has a pulley 28 connected by a crossed belt 29 with a pulley 30 carried by the shaft 17, b means of which the shaft 26 and its glue rofl 27 is rotated, the film of glue which is carrled up by the roll being regulated by a suitable scraper 31.

The pins 21 of the chains 2O are so spaced that shortly after a blank is fed onto the plate 18, its rear edge is engaged by a )air of ins (one pin of each chain) an is pus ed along the plate. It is prevented from unduly rising by a pair of guide. rods 32 vertical portions of which are held in clamps 33 carried b a tie rod 34.

Each blan r, while being pushed along, recelves four small areas of glue on those corner portions of its surface to which the tabs a (Fig. 8) are later applied by the machine. The means for applying the glue comprise four pads 35, of suitable material, preferably leather, 'carried by four arms 36 each of which is adjustably secured to the shaft 37. Said arms, are in two pairs so mounted on the shaft 37 that they may be adjusted rotatively or longitudinally, to suit the size and proportions of the lblanks bemg operated upon, to cause each pad as it rotates to first take a small amount of glue from a roll 27 and transfer it to the proper location of the blank as the latter travels along and the pad is rotatingl to contact.

with it. The two pairs of arms are laterally adjusted to suit the lateral dimensions of the blanks, and the two arms of each pair are adjusted relatively to each other about the shaft to suit the longitudinal dimensions of the blanks.

The pads are quite small, considerably smaller than the size of the tab sections which are cut from the strips a as hereinafter described, so that the areas of glue applied to each blank will be substantially no larger than sufiicient to result in the tabs a being connected to the bla-nk only at those portions which are shaded in Figure 8. As indicated in said ligure, the glue (See shaded areas) is located solely at one side of the crease lines of the blank, while the tabs a are larger and cross said lines, thereby leaving the un-secured portions of the tabs free to shift or slide when the blank is folded on said lines.

It is desirable that the portions of the blanks to which glue is being applied by the rotating pads 35 shall be capable of yielding at the moment of receiving the glue. to avoid their beingsubjected to any more pressure than is required to eifect transference of the glue without unduly spreading it.' To attain this effect I provide two small plates 38 (Figs. 1 and 7) supported by a tie rod 39. Said plates are substantially flush with the long plate 18,` and each plate has its upper surface recessed at the point above which the two pads of a pair successively move duringr the lowest portion of their rotation. '.lherefore, wh'ile the portions of the blanks surrounding those areas where the glue is applied are supported by the marginal portions of the recessed plate 38, the areas where the glue is applied are unsupported and can yield slightly at the moment of receiving glue from the pads.

As each blank is pushed along by the chain ins, after receiving the glue, it is deliveredonto a carrier belt 40 (Fig. 2) which may be a -single one of suflicient width, or two or more narrower ones, the mid-width portion only of the blank riding on said belt or belts. Said belt runs on a pulley 41 loosely mounted on shaft v19, and a pulley 42 carried by a driven shaft. 43, a belt tightencr 44 being carried by arms 45 adjustably secured to a tie rod 46. The reason for mounting pulley 41 loosely on the shaft 19 is that it is preferable to run the belt 40 at a speed faster than that of the chains 20 so as to draw each blank away from its pushing pins before said pins begin to move down around the chain sprockets which are mounted on shaft 19. But for this difference of speed and drawin blank` its` rear edge would-die liable to be torn by the downwardly moving chain pins as they pass around the limlerneath that portion of. the belt which is between the pulleys 4l, 42, is a belt-Supaway of the forward sprockets.

- aiixing porting plate 47 the bracket or arm 48 of which 1s rigidly supported by a tie rod 49.

To ensure travel of each blank with the belt as soon as the forward portion of the blank reaches the belt, I provide a yieldingly mounted press roll 50 above that portion of the belt which runs over the pulley 41. Said roll 50 is carried by one end of a lever 51 pivotally supported by a bracket 52 depending from tie rod 34 and having a tension spring 53 exerting an upward pull at its other end. The press roll is located at the receiving end of the belt so that the rear edge of each blank will have p-assed said roll shortl before the front edge of the blank rear, es certain stops presently described. This is because the blank must remain stationary for a moment during the of the tabs. Before describing the stops 1t is best to explain tha-t the blank is caused to resume its travel with the belt, after the tabs are located and the stops have moved away, by means of a pair of rolls 54 which are in an elevated position while the tabbing is bein effected and are then lowered toi press the lank on the belt and cause it to be forwarded by the latter. Said rolls 54 are carried by a light frame 55 pivoted at its mid-length to anarm 56 of a rock shaft 57 the actuation of which will be described hereinafter.

The means for temporarily arresting each blank on the belt 40, after its rear edge has left the press roll 50, comprises a pair of stops 58 carried by rods 59 adjustabl connected to a rock shaft 60 the actuatlo-n of which will be described hereinafter.

The mechanism for su plying small pieces of reinforcin materialJsuch as Kraft paper to the four g ue-bearing areas of the blank,` while the blank is in stationary position determined by the stops 58, will now be described Two parallel carriage bars 61 are mounted on tie rods 34 and 62 (Figs. 1 and 2) and are adjustable thereon by means of screw rods 63 mounted in bearings 64 rovided in the side walls of the frame. he two screw rods of each carriage bar have sprockets connected by endless sprocket chains 65. By a plying a wrench to the outer end of one ofJ either pair of screw rods and rotating it, the threaded portions of both rods of the pair effect a lateral adjustment of that carriage bar. Therefore the two carriage bars and all parts carried thereby may be adjusted to suit the transverse dimensions of the blanks to be tabbed.

The outer face of each carriage bar 61 is formed with a rib on which are mounted two blocks 66 (Figs. 1, 3 and 4). The four blocks are adjustably secured in proper positions longitudinall of the two carriage bars, according to t e longitudinal dimensions of the blanks, by means of set screws 67 (Fig. 4) which are long enough to bear on the upper faces of the ribs of said bars.

Extending outward from each block 66 is an arm 68 to which is ri idly secured an upri ht 69 carrying a reel 0 for a co-il of tabblng material a. From the reel the strip a leads down through a slotted guide pin 71 projecting from a pendant 72 pivoted at 73 to the end of arm 68'and having a flanged roll 74 freely mounted on a pin at its lower end. A spring 75 holds the roll 74 yieldingly a ainst a feed roll 76 with the flanges of t e roll 74 overlapping the sides of the feed roll, whereby lateral shifting of the strip is prevented. The four feed rolls 76 are milled, or have other suitable peripheries, so that the strips a, which are held against them by the spring-actuated rolls, will be fed a predetermined distance by the rolls 76 according to the amount of rotary movement imparted to said rolls 76 by the mechanism which will now be described. The two feed rolls for each side of the machine are carried by a shaft 77 mounted in the lower ortions of the uprights 69. Each shaft 7 at one end extends through a bracket 78 secured to a carriage bar 61, and has a bevel pinion 79. The two bevel pinions 79 mesh with bevel pinions 80 carried by a transverse shaft 81 the intermittent actuation or drive of which will be described hereinafter. lt will be readil understood however that whenever the sha t 81 is rotated, all four of the strips L will be fed by the rolls 76.

Each strip a extends from the feed roll between fixed guides 82, 83, (Fig. 4) and through a slot 84 in the lower end of a member 85 which will be referred toas a knife slide because it is slidingly mounted against one face of a vertical bar 86 and coacts with the lower end of the latter to cut the strip when the slot 84 asses above the lower end of the bar 86. 4or a reason which will presently be cle-ar, each bar 86 will be referred to as a presser bar.

In connection with Figures 2 and 3, both of which are looking in the same direction, it is explained that the two presser bars 86 and their adjuncts shown in Figure 2 are those at the right or far side of the machine, beyond the line of section on which said figure is drawn, while Figure 3 illustrates the other but `similar pair of bars 86.

The outer face of each block 66 is formed or provided with vertical ways 87 for the presser bar 86 and the latter has a threaded tip 88 passing through a stop plate 90 and provided with a nut 89. The stop plate 90 is secured to the top of the block 66 by screws 91. A. s ring 92 is coiled around the tip 88 and con ned between the plate 90 and the shoulder at the base of the tip so that said spring normally holds the presser bar 86 down to the position determined by the lll nut 89 bearing on the top of the stop late 90. But said bar can yield when a b ank is urged upward against it by the plate 102 hereinafter described. t

The knife slide 85 has vertical slots 93 through which screw pins 94 pass into the presser bar 86. A coiled spring 95 on the lower pin 94, between its head and a plate bearing against the outer face of the knife slide, holds the knife slide closely against the presser bar to ensure proper cutting. of the strip as presently described. A spring 96 is coiled around a pin 97 rising from the knife slide through aguide pin 98 projecting from the presser bar, said spring being confined between the pin 98 and the top of the presser bar and normally holding the knife bar down to the limit prescribed by the slots 93 and pins 94, with the strip slot 84 located below the plane of the bottom of the presser bar andv with the strip a extending under the presser bar. i

Each presser bar has, in its foot, a pivoted toe A99 normally held in substantially the position shown in Figure 4, by a spring 100. And secured to one side of each presser bar is a guide 101'so that each blank which is forwarded to position for being tabbed will be guided under the -presser feet, their toes 99, and the lower ends of the knife slides.

When each blank reaches position for tabbing, said position being determined by the stops 58, two plates 102 (one for each pair of tabbing devices) rise and press the blank first against the two knife slides so as to effect a cutting off of the four lengths of strips which project inward beyond the inner faces of the knife slides, and then raise the blank to press its four glued areas against the cut-0H:` sections of strips and cause their adhesion in the locations indicated in Figure 8. The purpose of the small spring toes 99 is to prevent the cutting action from causing the small sections of the strips to getout of position. A characteristic of Kraft paper, and some other materials, is that when a small piece is cut 0H it is liable to be snapped somewhat aside.v With the present machine however, the rise of the plates 102 effects a slight grip of the blank and the strip ends between said plates and the spring toes 99 just before the cutting action. takes places.

Said toes are mounted in recesses of the presser feet so that as the plates 102 complete their upward movement, the toes recede into the recesses and enable a flat pressure to be exerted by the presser feet on the sections a.

Each upwardly movable presser plate 102 is carried by the upper end of a vertical slide 103 guided in bearings 104 (Fig. 3) mounted on the tie rods 46, 49, and adjustable longitudinally of the latter. At the lower end of each of the two slides 103 is a roll 105 which is acted upon by a cam 106 carried by the shaft 107. Both cams, of course, act simultaneously so that both presser plates 102 are raised alike vto eHect simultaneous compressi-on at the four points where the tabbing sections a have been supplied as de* scribed.

It is to be understood that during the tabbing operation, the rolls 54 are raised above the blank (Fig. 2) and that the stops 58 are also in the position shown in said figure thereby holding the blank stationary although the. belt 40 travels continuously. The means for lowering the stops 58, after the tabbing pressers 102 have risen, will now be described Carried by the shaft 107 (Fig. 1) is a cam 108 which acts upon a roll 109 of a link or thrust rod 110 having its lower end forked to be guided on shaft 107 and having its upper end connected to an arm 111 of the shaft 60 to rock the latter, a spring 112being connected to effect return movement. As hereinbefore explained, the rock shaft carries the rods 59 (Fig. 2) the ends of which are up-turned to form the stops 58.

Immediately after the stops 58 have swung down below the path of movement of the blank, the rolls 54 are lowered onto the blank so that the resultingl friction between the under surfaces of the blank and the belt 40 will cause the now tabbed blank to pass to suitable delivering mechanism such as belts indicated in Figure 2. The means for controlling the movements and alternating upper and lower positions of the rolls 54 will now be described As shown in Figure 1, the shaft 107 has a .cam 113 which acts upon a roll 114 at one'end of a lever 115 pivoted to the frame at 116, the other end of the lever being connected by a link 117 to an arm 118 of the rock shaft 57 which rock shaft, as has been explained, has an arm 56 carrying the rolls 54. So long as the high part of the cam 113 is under the lever roll 114 (see Fig. 1), the rolls 54 remain elevated. When said high part passes, the rolls 54 descend onto the blank, such movement being preferably aided by a spring 119 extending from the lower end of the link 117 up to a pin fixed in the frame. In practice, the cam 113 is constructed to enable it to be adjusted to vary the duration of contact of the rolls 54` with a blank on the belt 40 according to the length of the blanks operated upon.

Sometimes the material of which the blanks are made is such that the blanks are not perfectly flat but are somewhat curved or curled. To render it certain that the front edges of such blanks will not pass over one or both of the stops 58 and so fail to be arrested, I provide two elongated guide strips 120, one extending along close to each pair of presser feet (Figs. 3 and 4). Each guide strip 120 is rigidly connected, substantiallyat its mid-length, to two pins 121 yieldingly mounted in sockets iii a bracket 122 adjust-y ably secured to carriage bar 61.

It is important that there shall be no feed of the tapes a if no blank, with glued areas, is approaching position to be tabbed. ,The means for effecting this control will now be described A trip finger or feeler 124 (Figs. 1, 2 and 5) is secured to a rock shaft 125 and extends therefrom in a direction and to a distance to normally cross the path of movement of a blank which is pushed along by the chain pins 21. It occupies the position shown in Figure 2 when the machine is idle, and also if the machine is running with no blanks passing through. lt must be swung up by a passing blank to bring about connections that will effect a feeding of the four strips a. To this end, the shaft 125 has an arm 126 connected by a link 127 to an arm 128 of a rock shaft 129, the latter having another arm cut away or recessed to provide a shoulder or latch 130 (Fig. 5). A fixed stop pin 131 limits the position of the latch arm in one direction and, through the described connections with the feeler or trip finger, limits the lower position of the latter to about that shown in Figure 2. A lever 132 is pivotally supported on a stud pin 133 and has a roll 134 to be acted upon by a cam 135 (Fig. 1) carried by a shaft 37. The lever also has a pin 136 to cooperate as presently described with the latch 130. The lever is normally held as shown in Figures 1 and 5 by a spring 137. The lever carries a pawl 138 engaging a ratchet 139 mounted on the stud 133 so that, when the lever pin 136 is free from the latch 130, the spring 137 can swing the lever to cause the pawl 138 to effect a partial rotation of the ratchet 139. Compounded with the ratchet is a gear 140 which is in mesh with a pinion 141 of shaft 81. As hereinbefore explained. rotation of shaft 81 causes a feeding of all four of the strips a.

The length of the radii of the high part of the cam 135 is but slightly more than sufficient, when acting on the roll 134. to depress the pin 136 a little from the latch 130, so that the force of spring 137 will be overcome. If now noblank is passing so as to swing the feeler 124 up, nothing happens to the parts shown in Figure 5. But if a blank does lift the feeler 124 it will swing it far enough up, and keep it held up while the full length of the yblank is passing under it, so as to also swing the latch arm back far enough to permit the lever pin 136 to move up (under the influence of spring 137) as far as permitted by the low portions of the cam which low portion will now have arrived above the roll 134. Consequently the spring 137, while so tilting the lever 132, also causes the pawl 138 to rotate the ratchet 139 and gear 140 the requisite distance to cause the four strips a to be fed ready to have the tabbing sections cut therefrom as hereinbefore described. T hen, as the cam 135 continues to rotate, its high portion acts on roll 134 to again put the spring 137 under tension and carry the lever pin 136 down where it will be caught and relocked by the latch 130, the feeler 124 returning to its normal lower position. No further feed of the strips a can be made until another'blank arrives to lift the feeler at which time, owing to the relative timing of the operative parts of the machine, the high portion of the cam 135 will again be acting on the lever roll 134 to ease up the bearing of pin 136 against the latch 130 in order that the feeler 124 may be easily lifted by the front edge of a blank.

l/Vhilel have illustrated some of the drive and gearing mechanism of the machine, it is n ot necessary to describe the same in detail since such mechanism may be of any other \well known or preferred type.

I have referred to the use of water instead of glue in the troughs 25. This would be the case if the strips a are of previously guinniied (and dried) material. Then` the pads 35 would simply moisten those areas of the blank where the reinforcing sections 0r tabs are to be applied. In either case, the pads 35 serve as means for applying coating material (glue or water) to the blanks While they are on the way to tab-receiving position. However, when a machine such as described herein is to be used for attaching to blanks tabs which are to have portions free to shift or slide, the use of glue and un-gummed tapes a is preferable because if gummed tape is employed the tabs would be liable to stick over areas larger than desired. lt is to be understood that the term glue is employed in a generic sense and to mean any suitable adhesive.

lAs the operations of the different parts of the machine have been explained in connection with description of the construction thereof, a detailed description of the operation of the machine as a whole will be unnecessary.

Having now described my invention, I claim:

1. A clank tabbing machine having means for applying areas` of glue to blanks and means for aiiixing to the blanks, by said glue areas, tabs of a size larger than the areas of glue.

2. In a machine for alfixing reinforcements to sheet material, means for causing sheet material to travel, and means for connecting sections of reinforcing material to the sheet material through the medium of adhesive areas less in size than the size of said sections.

3. A blank tabbing machine having means for causing creased blanks to travel in a predetermined path, means for applying glue to the blanks in areas solely at one side of the crease lines of the blanks, and means for supplying tabbing sections of a size to cross said crease lines and pressing them'in contact with the lued areas.

4. In a mac ine for tabbing blanks, apair of glue rolls having means for sup lying lhem with lilms of glue, a rotary sha having two pairs of ads for taking glue from said rolls, the pa s of each pair being relatively positioned to follow each other in the same path of rotation, means for causing blanks to travel in a plane to receive four areas of glue from said pads, and means for aiixing reinforcing tabs to the glue areas.

5. In a machine for tabbing blanks, a pair of glue rolls having means for supplying them with films of glue, a rotary shaft having two pairs of arms independently adjustable on said shaft and carrying pads for taking'glue from said rolls, the pads of each pair being relatively positioned to follow each other in the same path of rotation, means for causing blanks to travel in a plane to receive four areas of glue from said pads, and means for aflixing reinforcing tabs to the glue areas.

6. In a machine of the character described, means for causing blanks to travel, means for applying glue to areas of the blanks while travelling, and means for permitting those areas where the glue is applied to yield relatively to the rest of the blanks during the operation of the glue applying means.

7.V In a machine of the character described, means for causing blanks to travel, means for applying glue to areas of the blanks whilc travelling, and recessed plates lin position to support portions of the blanks adjacent to those portions which` receive the glue. l

8. In a machine of the character described, a pair of recessed plates, means forcausing blanks to travel over said plates, and rotary glue-applying pads in position to apply glue to areas of the blanks above the recesses of said plates.

9. In a machine of the character described, a' continuously movable carrier belt, means for delivering blanks successively thereto, means for temporarily arresting each blank after it arrives on said belt, and means for applying reinforcing tabs to each blank while it is arrested.

10. In a machine of the character des; scribed,a continuously movable carrier belt, means for delivering blanks successively thereto, means for temporarily arresting each blank after it arrives on said belt, said means comprising a rock shaft having arms with stops movable to and from osition in the path of movement of the b anks, and means for applying reinforcing tabs to each blank while it is arrested.

11. In a machine of the character described a continuously movable carrier belt, means for delivering blanks successively thereto, means for temporarily arresting each blank after it arrives on said belt, means for applying reinforcing tabs to each while it is arrested, presser rolls intermittently movable toward and from the belt, and means for shifting said rolls to elevate them while each blank is arrested and lower them upon cessation of the action of the arresting means.

12. In a machine for tabbing blanks, means for causing independent blanks to travel successively, means for preparing dili'erent areas of each blank for the adhesive connection of tabs thereto, means for temporarily arresting each blank, and means for applying tabs to said prepared areas while the blank is arrested.

13. In a machine of the character described, two pairs of presser feet, the two pairs being adjustable toward and from each other and the presser feet of each pair being adjustable toward and from each other, means for supplying a tabbing section under each presser foot, means for locating blanks successively in stationary position under said tabbing sections, and means for pressing the blanks toward said feet.

14. In a machine of the character described, a pair of relatively adjustable car-4 riage bars, a pair of pressing members adjustably mounted on each bar, means for locating blanks successively in position under said pressing members, means for supplying tabbing sections between the blank and the pressing members, and means for e'ecting pressure to secure the said sections to the blank.

15. In a machine for tabbing blanks, means for causing independent blanks to travel successively, means `for preparing four corner areas of each blank for the adhesive connection of tabs thereto, means for temporarily arresting each blank, a plurality of tabbing appliances each including strip feeding and cutting mechanisms, and means for effecting simultaneous operation of said appliances.

16. In a machine of the character described, a plurality of tabbing appliances, each including strip feeding and cutting mechanisms, means for holding a blank in stationary position for the operation of said appliances, means for eiecting simultaneous operation of said appliances, and means controlled by the passage of blanks toward said stationary position for initiating the operation of said appliances.

17. In a machine of the character described, a plurality of tabbing appliances each including strip feeding and cutting mechanisms, means for supplying blanks successively to position below said applihere ences, and means for lifting each hlank toward said appliances to edect attacent of tabs to the blank.

18. In a machine of the character de scribed, a plurality of tahhing appliances .each having means for supporting a strip or tahbing material and having a presser foot and an adjacent sliding cutter and means for feeding the strip to he cut, means tor temporarily holding a blank in stationary position to be operated upon, and means for edecting simultaneous operation ci the tahloing appliances i9. In a machine o the character descrihed, a plurality of tahbing appliances each having means for supporting a strip oli talohing material and having a yieldingly mounted presser, a sliding cutter mounted on one side of the presser, and means 'ier feeding the strip te he out, and upwardly movable members for raising a blank to eifect pressure thereon.

2U. In a machine of the character described, a plurality of tabbing appliances each having means for supporting a strip of tabbing material and having a presser, a slide mounted on one side of the presser and having a slotted lower end normali extending below the resser, means for f ing the strip throng the slot ci said slide and means for forcing the lolank upward against said slide to cause it to coact with the presser to cut the strip.

2l. In a machine of the character described, two pairs of tabbing appliances each ha' a strip-feeding roll, a shaft for the f.-. l; rolls of each pair, a driving shaft geared to each of said roll shafts, means for temporaril holding a blank in stationary position to he operated upon, and means for eiectin simultaneous operation of all of said tabing appliances.

22. In a machine v of the character described two pairs of tabb' ap liances each having a strip-feeding ro a aft for the feeding rolls of each pair, a dri shaft geared to each of said roll shafts, an means dependent upon the supplv of blanks to position for tabbing to control the operation of said driving shaft. n

A tehhing machine having a presser foot provided with a yielding toe normally projecting from it, means for feeding a strip past each foot sind toe, a cutter for severing the strip adjacent said foot, and means for pressing a blank tovvardthe strip and foot.

2li. A tahbing machine having a presser ifoot provided with a yielding toe normally projecting from its lower'iace, a cutter slide adjacent one side of the presser foot and having strip-guiding slot normally below the plane of the lower face of the presser foot, and means `for pressing a blank with an overlying portion of a tab strip against the lovver end oi' the cutter slide and against the said toe and presser foot.

25. A tahhing machine having tvvo pairs of presser feet each provided with a yielding toe and with means for feeding and cuttin o tahhing strip, an u Wardly movable pate helovv each pair o presser feet, and means for elevating said lates simultaneously toward the presser eet.

2d. A machine oi the character described having means for aihxing tabs to dierent areas of blanks, means for causing hlanks to move successively toward position to be tabbed, a movable member in the'path of movement of the `blanks, and means controlled hy said movable member for determining the operation of the tab aiixing means.

27. A machine of the character described having means for feeding strips and cutting them and aiiixin sections thereof to different areas of b anks, means for causing hlanks to move successively toward osition to he tabbed, a movable member in t e path of movement of the blanks, and means controlled h said movable member for determining t e operation of the strip-feeding means. v

In testimony whereof I have axed my signature.

ninoLn J. Goss.. 

